"That’s an amazing invention, but who would ever want to use one of them?"
President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
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| Number | Title | Issue Date |
| 7241169 | Adapter for power supply An adapter for power supply is disclosed. The adapter comprises a body containing a peg module connected a connector of a plug, characterized in that one side of the body of the adapter is a common socket engaged with an engaging slot formed on the housing, the top ... | 07/10/2007 |
| 7229294 | Supplying power Apparatus for use in supplying power includes an input connector and first and second output connectors. The input connector has first and second sets of pins. The first set is dedicated to receiving DC power, and the second set is dedicated to receiving AC power. T... | 06/12/2007 |
| 7140922 | Multi-outlet AC/DC adapter An AC/DC adapter in which an AC to DC converter is incorporated in a multiple outlet wall adapter. The AC/DC adapter includes at least one standard AC plug receptacle and at least one DC receptacle. Electronic devices which require DC power can be plugged into to th... | 11/28/2006 |
| 7052299 | Low voltage electricity distribution circuit The low voltage electricity distribution circuit of the present invention is an electrical outlet that includes a receptacle mounted to a recess including either a plurality of wires or a bus bar system. The receptacle has at least one continuously live power socket... | 05/30/2006 |
| 6974342 | Connector elements including protective member for preventing connection to certain connector elements An electrical device includes a power supply that is switchable between a first mode and a second mode. The power supply includes a first connector element of the power supply, the first connector element being one of a male and a female connector element for mating... | 12/13/2005 |
| 6960727 | Electrical apparatus with cover for retractably housing an electrical cable connected thereto An AC adapter has a deformable cover located on an outer surface of the housing and defines an interior cavity between the inner surface of the cover and the housing surface for manual retraction and housing of the electrical cable when the electrical apparatus is n... | 11/01/2005 |
| 6840813 | Connecting apparatus for three phase induction motor of electric vehicle A connecting apparatus for constituting a Y-connection of three phase windings of a three phase induction motor or supplying three phase power to the three phase windings includes a first connector and a second connector. The first connector has three terminals resp... | 01/11/2005 |
| 6790062 | Adapter structure An adapter structure, suitable for use in different electricity standards, has a casing, a first plug, a second plug, a pair of conductors and a pair of insertion holes. The first plug has two straight pins pivotally connected to the casing so that the straight pins... | 09/14/2004 |
| 6790086 | Electrical plug An electrical plug includes a first insulating body, a first prong extending from one end of the first insulating body, a second insulating body, and a second prong extending from one end of the second insulating body. The first insulating body and the second insula... | 09/14/2004 |
| 6722900 | Power plug with elastic pieces for positioning A prismatic (18) having a square cross-section is provided in a rotation shaft (16) to which plug terminals (14) are fixed. The rotation shaft (16) is sandwiched between a pair of elastic pieces (17a), (17a) of... | 04/20/2004 |
| 6699052 | Dual voltage power converter A power converter includes a transforming unit having pins outwardly projecting from the transforming unit, and a socket. An adapter in the power converter includes a first plug mounted on a first side of the adapter, and a second plug mounted on a second... | 03/02/2004 |
| 6638113 | Pin configuration adapter for AC-adapter A pin configuration adapter is disclosed which can be attached to an AC-adapter having a plug body having a first pin configuration and an AC-adapter housing having a power conversion circuit. The plug body is rotatable between a first position where it i... | 10/28/2003 |
| 6491550 | Entertainment system capable of discriminating model of operation device, operation device, and machine body of entertainment system The present invention provides an entertainment system in which the models can be discriminated between compatible operation devices. A connector of the operation device of the present invention comprises at least two recess portions on the peripheral sur... | 12/10/2002 |
| 6422884 | Pre-wired circuit component for flexible wiring system A pre-wired electrical component for a flexible wiring system has a housing, a flexible power supply cable connected in strain relieving relation to the housing within an inlet opening in the housing, at least one power supply outlet member mounted in an ... | 07/23/2002 |
| 6358096 | Multiple source power adapter for output power control A power adapter provides electrical power from multiple power sources. The power adapter includes first and second plugs adapted to be electrically coupled to first and second power sources, respectively. The power adapter is configured to provide a first... | 03/19/2002 |
| 6299477 | Self-centering power adapter A Yo-Yo shaped power adapter is provided to better organize and manage its power cable. Its physical configuration further protects the power cable from damage. It is both convenient to use and aesthetically pleasing in appearance. In operation, the combi... | 10/09/2001 |
| 6250939 | Adapter with diversified plugs and rectifying function An adapter with diversified plugs and rectifying function. The adapter including a casing and a pivotally jointed cover. A penetration-disposing portion in a vacant lot of the casing is defined by a plurality of partition portions for setting differently ... | 06/26/2001 |
| 6126460 | Safety dual plug structure A safety dual plug structure with a primary plug and a secondary plug mounted to an electrical charger is disclosed. The primary plug is provided with a casing rotatably received in a cavity defined in the charger with two prongs mounted thereto for selec... | 10/03/2000 |
| 6048219 | Voltage selection electrical connector An electrical connector for configuring the supply voltage of rotary electric machines, particularly electric motors, having a plurality of electrical windings. The connector includes an electrical terminal block mountable in a bell housing of the rotary ... | 04/11/2000 |
| 6030247 | Power-supply adapter device Secondary-power output cable is detachably coupled to an adapter body via a cable connector. The cable connector includes a jack provided on the adapter device and a plug attached to the output cable. The jack and plug have respective engaging mechanisms ... | 02/29/2000 |
| 5967807 | AC/DC electric adapter with the large and small plugs This invention is an "improved AC/DC electric adapter with the large and small plugs". The main body of the device consists of upper and lower casings; inside the box, there is an electronic converting circuit. In its upper casing, there is an indentation... | 10/19/1999 |
| 5902148 | Multiple receptacle extension cord An extension cord having multiple female sockets which are attached to two or more conducting wires. In one embodiment of the invention, the cord has three or more conducting wires with two or more female sockets attached to the conducting wires. Each of ... | 05/11/1999 |
| 5885109 | Electrical adapters An electrical adapter having a face panel with different blade and grounding prong insertion holes for receiving different electrical plugs, a track at its back side adapted to receive one of a set of plug members, a plug unit and a socket unit arranged a... | 03/23/1999 |
| 5836777 | Electrical outlet device for connection with various types of plugs An electrical outlet device includes a base casing; a cover covering the base casing; a grounding conductive assembled including a base frame formed with at least a first clamping portion having a pair of elastic pieces, a second clamping portion having a... | 11/17/1998 |
| 5829993 | Charger with a replaceable electrical plug A charger with replaceable electrical plugs includes a casing 1 including a lower casing 11 and an upper casing 12. An electronic power supply circuit 13 is accommodated inside the casing 1. The lower casing 11 has an opening 111 having a replaceable two ... | 11/03/1998 |
| 5803754 | Modified receptacle and plug for low voltage DC distribution An receptacle for low voltage DC applications includes a receptacle surface in which are located only one pair of female connections. One of the female connections is a terminal normally connected to the neutral line of an AC power grid, and the other of ... | 09/08/1998 |
| 5738780 | Voltage converter for water treatment system UV bulb A driver or ballast for the ultraviolet bulb of a water treatment system. The driver includes a step-up transformer and a feedback oscillator connected between the secondary and the primary of the transformer. The secondary of the transformer also is sele... | 04/14/1998 |
| 5720628 | Power converter with compact cord storge A portable electronic tool comprising a body for the portable electronic tool; a cable; and an engaging mechanism, so that the cable is stored while the cable is wound by the engaging mechanism around the external surface of the electronic tool body. A fi... | 02/24/1998 |
| 5716225 | Electrical assembly with dual voltage electrical connector between ballast and high intensity discharge lamp fixture An electrical assembly for selectively supplying either 120 volts or 227 volts from a junction box to a high intensity discharge lamp fixture via a dual voltage ballast and a dual voltage electrical connector. The dual voltage electrical connector has dua... | 02/10/1998 |
| 5715156 | Method and apparatus for providing AC or DC power for battery powered tools Method and apparatus for providing either AC mains or DC power for an electrically powered tool having a motor designed to be powered by a removable battery pack which fits into a recess in the tool. The apparatus includes a power block capable of being p... | 02/03/1998 |
| 5713749 | Multi-functional charging device A multi-functional charging device generally includes a housing having a lower housing and an upper housing. An electronic switching circuit is disposed within the housing. The lower housing is provided with an opening which has an inner housing socket at... | 02/03/1998 |
| 5660554 | Universal plug adaptor An electrical outlet for receiving electrical plugs of several types and providing different voltages to different plugs is disclosed.... | 08/26/1997 |
| 5616051 | A.C. mains adapters for international use A power connecting device for electrical appliances having two metal prongs for use with standard North American mains outlets; the prongs rotate to fold into a recess in the device. The recess protects the prongs for storage and transport, and is designe... | 04/01/1997 |
| 5593323 | Reversible polarity accessory cable An adapter for supplying D.C. current from a lighter receptacle to a remote accessory is formed by a plug inserted into the receptacle which has a reversible interconnection with a cable connected to the remote accessory. The end of the cable with the rev... | 01/14/1997 |
| 5580155 | Cabinet lighting system A cabinet lighting apparatus including a plurality of lamps attached to an interior cabinet wall in proximity to a cabinet door, the lamps including an actuation device so that they are illuminated when the cabinet door is opened, and extinguished when th... | 12/03/1996 |
| 5577923 | 125V/250V safety electric socket devices A 125 V/250 V safety electric socket device, including a socket body having a set of L pole contact metal plates and a set of N pole contact metal plates respectively connected to 125 V and 250 V power sources, a non-fuse circuit breaker contact metal rod... | 11/26/1996 |
| 5547399 | Universal AC adaptor for consumer electronics A universal AC adaptor has a transformer unit for converting standard AC line voltage to DC voltage and a plurality of plugs. Each plug has a flexible lead coupled to an output cord from the transformer unit at a coupler box. The leads allow the plugs to ... | 08/20/1996 |
| 5545046 | Charging connector for electric vehicle A DC power receiving portion and a DC power receiving portion, which are separated from each other, are provided within a power receiving connector of a unitary structure, and a first cap is provided for closing an entire open end of the power receiving c... | 08/13/1996 |
| 5474464 | Electrical adaptor An electrical adaptor or connector (1) comprising a housing (2), a carrier member (5) rotatably mounted on the housing, a plurality of selectable pin arrays (7) disposed on the carrier member and adapted whereby rotation of the carrier relative to the hou... | 12/12/1995 |
| 5381043 | Power supply arrangement and connector A power supply arrangement for a main unit of a portable, battery operated information processing apparatus including at least a microprocessor and a battery. The power supply arrangement comprising an expansion unit for the portable information processin... | 01/10/1995 |